Common issues affecting Emerson Sensi thermostats center around Wi-Fi network connection dropouts after router updates, uncalibrated temperature sensor drift, and power starvation errors on systems lacking a dedicated C-wire. Units installed without a C-wire occasionally experience power-sharing voltage fluctuations that cause heating or cooling systems to short-circuit or display low-voltage battery warnings. Ensuring proper wiring and stable 2.4 GHz router connections resolves most operational faults. Verification: Check network status indicators and voltage metrics in the Sensi app settings menu.
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